190739090 has 24 divisors (see below), whose sum is σ = 355607820. Its totient is φ = 73573920.

The previous prime is 190739089. The next prime is 190739111. The reversal of 190739090 is 90937091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 190081369 + 657721 = 13787^2 + 811^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234785 + ... + 235595.

Almost surely, 2^190739090 is an apocalyptic number.

190739090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190739090 is a deficient number, since it is larger than the sum of its proper divisors (164868730).

190739090 is an frugal number, since it uses more digits than its factorization.

190739090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 190739090 is about 13810.8323427663. The cubic root of 190739090 is about 575.6341736519.

The spelling of 190739090 in words is "one hundred ninety million, seven hundred thirty-nine thousand, ninety".